Elevator



NITED STATES ATENT rarest STEPHEN J. MARTIN AND HOYTE C. HADSTAT 1, OFDETROIT, MICHIGAN.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 442,632, dated December16, 1890.

Application filed May 22, 1890. Serial No. 352,790- (No model.)

' and HOYTE O. HADSTATE, of the city of Detroit, in the county of Wayneand State of Michigan, have invented a new and useful Improvement inElevators, of which the following is a specification.

Our invention relates to that kind of elevator in which the valves whichcontrol the motion of the car are actuated by a rope which extendsperpendicularly through the car; and the object of our invention is tofacilitate the manipulation of said rope. \Ve attain this objectby thedevice illustrated in the accompanying drawings, in which Figure l is aside elevation of the device embodying our invention attached to anelevator-car; and Fig. 2 is an enlarged detail view of the pulley E,showing the formation of its rim and the rope passing around saidpulley.

Similar letters refer to similar parts throughout both the views.

A is the roof, and B the floor, of an elevatorcar.

0 is the rope which actuates the valves which control the motion of thecar.

, frame D.

D is the frame attached to the floor of an elevator-car.

E is a pulley mounted in bearings upon a standard I", which standardrises from the The rim of the pulley E is provided with flanges G G,which rise from the rim of said pulley upon each side of its center andextend around said pulley.

IV is a small rope bound to the rope C at the upper and lower end of theelevator-well, extending through the elevator-car parallel to the ropeC, passing around the pulley E between the flanges G G and drawn tight,so as to be restrained from motion independent of the pulley E by itsfriction against the rim of said pulley.

H is a standard rising from the frame D.

I is a pulley pivoted in a bearing at the upper end of the standard II.

J is a belt passing loosely around the pulley I in the form shown inFig. 1. The belt J also passes around the pulley E upon one side of theflanges G G.

K is a standard rising from the frame D;

L is a shaft pivoted in a bearing at the upper end of the standard K.

M is a hand-lever keyed upon one end of the shaft L, and N is an armextending from the other end of said shaft.

P is a brake-shoe pivoted to the end of the arm N and adapted to bepressed against and -withdrawn from the rim of the pulley E by turningsaid arm.

R is a bent lever pivoted at S to the frame D and bearing at its upperend the roller T. V is a plate upon the lower end of thelevei' R, uponwhich the operator presses his foot to oscillate said lever. Where thebelt J is drawn tight around the pulleys I and E, the tightening-lever Bmay be dispensed with. Where the belt J is drawn tightly around itspulleys it will always move with the pulley E, while where it is passedloosely around said pulleysit will remain at rest except when it istightened by the lever R in order to employ it to start the car, asbelow described.

The operation of the above-described device is as follows: When theelevator-car is in motion, the motion of said car relative to the rope Wcauses said rope to rotate the pulley E. When it is desired to stop thecar, the operator draws upon the hand-lever M, thus forcing thebrake-shoe P against the rim of the pulley E, checking the motion ofsaid pulley, and consequently drawing upon the rope IV, because of theadhesion of its rim to said rope. The rope W carries with it the rope 0,thus stopping the car. WVhen the elevator-car is at rest and it isdesired to start it, the operator presses with his foot upon the plateV, thus oscillating the lever R and forcing the roller T againstthe beltJ, thus tightening said belt. By drawing downward upon the right or leftportions of the belt J the pulley E is turned in one or the otherdirection, because of the adhesion of said belt to the rim of saidpulley, drawing upon the rope W, because of the adhesion of its rim tosaid rope, and drawing, by means of the rope \V, upon the rope 0, thusstarting the car.

It will be noticed that in the above device the car can be started ineither direction by drawing down upon the belt J, and it is nevernecessary to go through with the inconven icnt operation of drawingupward. The belt .T is made of a material and form convenient for theoperator to grasp, and the injury to the operators hands incident to thehandlingof the valve-shifting rope is avoided.

Having fully described our invention, what we claim, and desire tosecure by Letters Patent, is

1. In controlling devices for elevators, the combination of a pulley E,pivoted in bearings upon the car, a rope O, adapted to actuate thevalves by which the motion of the elevator-car is controlled, anauxiliary rope \V, bound at its ends to the rope C at the top and bottomof the elevator-well and passing around the pulley E, and a brake mech-

